src/SDL.c
author Edgar Simo <bobbens@gmail.com>
Wed, 30 Jul 2008 10:28:37 +0000
branchgsoc2008_force_feedback
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Reset device and enable actuators when initializing.
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/*
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    SDL - Simple DirectMedia Layer
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    Copyright (C) 1997-2006 Sam Lantinga
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    This library is free software; you can redistribute it and/or
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    modify it under the terms of the GNU Lesser General Public
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    License as published by the Free Software Foundation; either
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    version 2.1 of the License, or (at your option) any later version.
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    This library is distributed in the hope that it will be useful,
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    but WITHOUT ANY WARRANTY; without even the implied warranty of
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    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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    Lesser General Public License for more details.
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    You should have received a copy of the GNU Lesser General Public
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    License along with this library; if not, write to the Free Software
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    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
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    Sam Lantinga
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    slouken@libsdl.org
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*/
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#include "SDL_config.h"
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/* Initialization code for SDL */
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#include "SDL.h"
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#include "SDL_fatal.h"
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#if !SDL_VIDEO_DISABLED
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#include "video/SDL_leaks.h"
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#endif
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#if SDL_THREAD_PTH
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#include <pth.h>
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#endif
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/* Initialization/Cleanup routines */
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#if !SDL_JOYSTICK_DISABLED
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extern int SDL_JoystickInit(void);
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extern void SDL_JoystickQuit(void);
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#endif
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#if !SDL_HAPTIC_DISABLED
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extern int SDL_HapticInit(void);
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extern int SDL_HapticQuit(void);
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#endif
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#if !SDL_CDROM_DISABLED
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extern int SDL_CDROMInit(void);
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extern void SDL_CDROMQuit(void);
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#endif
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#if !SDL_TIMERS_DISABLED
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extern void SDL_StartTicks(void);
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extern int SDL_TimerInit(void);
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extern void SDL_TimerQuit(void);
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#endif
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/* The initialized subsystems */
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static Uint32 SDL_initialized = 0;
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static Uint32 ticks_started = 0;
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#ifdef CHECK_LEAKS
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int surfaces_allocated = 0;
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#endif
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int
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SDL_InitSubSystem(Uint32 flags)
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{
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#if !SDL_VIDEO_DISABLED
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    /* Initialize the video/event subsystem */
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    if ((flags & SDL_INIT_VIDEO) && !(SDL_initialized & SDL_INIT_VIDEO)) {
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        if (SDL_VideoInit(NULL, (flags & SDL_INIT_EVENTTHREAD)) < 0) {
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            return (-1);
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        }
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        SDL_initialized |= SDL_INIT_VIDEO;
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    }
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#else
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    if (flags & SDL_INIT_VIDEO) {
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        SDL_SetError("SDL not built with video support");
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        return (-1);
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    }
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#endif
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#if !SDL_AUDIO_DISABLED
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    /* Initialize the audio subsystem */
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    if ((flags & SDL_INIT_AUDIO) && !(SDL_initialized & SDL_INIT_AUDIO)) {
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        if (SDL_AudioInit(NULL) < 0) {
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            return (-1);
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        }
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        SDL_initialized |= SDL_INIT_AUDIO;
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    }
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#else
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    if (flags & SDL_INIT_AUDIO) {
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        SDL_SetError("SDL not built with audio support");
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        return (-1);
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    }
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#endif
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#if !SDL_TIMERS_DISABLED
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    /* Initialize the timer subsystem */
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    if (!ticks_started) {
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        SDL_StartTicks();
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        ticks_started = 1;
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    }
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    if ((flags & SDL_INIT_TIMER) && !(SDL_initialized & SDL_INIT_TIMER)) {
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        if (SDL_TimerInit() < 0) {
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            return (-1);
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        }
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        SDL_initialized |= SDL_INIT_TIMER;
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    }
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#else
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    if (flags & SDL_INIT_TIMER) {
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        SDL_SetError("SDL not built with timer support");
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        return (-1);
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    }
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#endif
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#if !SDL_JOYSTICK_DISABLED
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    /* Initialize the joystick subsystem */
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    if ((flags & SDL_INIT_JOYSTICK) && !(SDL_initialized & SDL_INIT_JOYSTICK)) {
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        if (SDL_JoystickInit() < 0) {
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            return (-1);
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        }
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        SDL_initialized |= SDL_INIT_JOYSTICK;
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    }
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#else
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    if (flags & SDL_INIT_JOYSTICK) {
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        SDL_SetError("SDL not built with joystick support");
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        return (-1);
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    }
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#endif
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#if !SDL_HAPTIC_DISABLED
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    /* Initialize the haptic subsystem */
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    if ((flags & SDL_INIT_HAPTIC) && !(SDL_initialized & SDL_INIT_HAPTIC)) {
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        if (SDL_HapticInit() < 0) {
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            return (-1);
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        }
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        SDL_initialized |= SDL_INIT_HAPTIC;
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    }
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#else
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    if (flags & SDL_INIT_HAPTIC) {
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        SDL_SetError("SDL not built with haptic (force feedback) support");
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        return (-1);
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    }
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#endif
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#if !SDL_CDROM_DISABLED
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    /* Initialize the CD-ROM subsystem */
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    if ((flags & SDL_INIT_CDROM) && !(SDL_initialized & SDL_INIT_CDROM)) {
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        if (SDL_CDROMInit() < 0) {
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            return (-1);
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        }
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        SDL_initialized |= SDL_INIT_CDROM;
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    }
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#else
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    if (flags & SDL_INIT_CDROM) {
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        SDL_SetError("SDL not built with cdrom support");
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        return (-1);
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    }
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#endif
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    return (0);
0
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}
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int
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SDL_Init(Uint32 flags)
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{
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#if !SDL_THREADS_DISABLED && SDL_THREAD_PTH
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    if (!pth_init()) {
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        return -1;
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    }
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#endif
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    /* Clear the error message */
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    SDL_ClearError();
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    /* Initialize the desired subsystems */
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    if (SDL_InitSubSystem(flags) < 0) {
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        return (-1);
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    }
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    /* Everything is initialized */
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    if (!(flags & SDL_INIT_NOPARACHUTE)) {
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        SDL_InstallParachute();
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    }
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    return (0);
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}
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void
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SDL_QuitSubSystem(Uint32 flags)
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{
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    /* Shut down requested initialized subsystems */
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#if !SDL_CDROM_DISABLED
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    if ((flags & SDL_initialized & SDL_INIT_CDROM)) {
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        SDL_CDROMQuit();
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        SDL_initialized &= ~SDL_INIT_CDROM;
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    }
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#endif
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#if !SDL_JOYSTICK_DISABLED
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    if ((flags & SDL_initialized & SDL_INIT_JOYSTICK)) {
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        SDL_JoystickQuit();
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        SDL_initialized &= ~SDL_INIT_JOYSTICK;
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    }
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#endif
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#if !SDL_HAPTIC_DISABLED
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    if ((flags & SDL_initialized & SDL_INIT_HAPTIC)) {
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        SDL_HapticQuit();
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        SDL_initialized &= ~SDL_INIT_HAPTIC;
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    }
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#endif
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#if !SDL_TIMERS_DISABLED
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    if ((flags & SDL_initialized & SDL_INIT_TIMER)) {
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        SDL_TimerQuit();
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        SDL_initialized &= ~SDL_INIT_TIMER;
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    }
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#endif
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#if !SDL_AUDIO_DISABLED
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    if ((flags & SDL_initialized & SDL_INIT_AUDIO)) {
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        SDL_AudioQuit();
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        SDL_initialized &= ~SDL_INIT_AUDIO;
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    }
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#endif
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#if !SDL_VIDEO_DISABLED
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    if ((flags & SDL_initialized & SDL_INIT_VIDEO)) {
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        SDL_VideoQuit();
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        SDL_initialized &= ~SDL_INIT_VIDEO;
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    }
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#endif
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}
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Uint32
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SDL_WasInit(Uint32 flags)
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{
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    if (!flags) {
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        flags = SDL_INIT_EVERYTHING;
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    }
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    return (SDL_initialized & flags);
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}
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void
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SDL_Quit(void)
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{
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    /* Quit all subsystems */
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#ifdef DEBUG_BUILD
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    printf("[SDL_Quit] : Enter! Calling QuitSubSystem()\n");
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    fflush(stdout);
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#endif
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    SDL_QuitSubSystem(SDL_INIT_EVERYTHING);
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#ifdef CHECK_LEAKS
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#ifdef DEBUG_BUILD
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    printf("[SDL_Quit] : CHECK_LEAKS\n");
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    fflush(stdout);
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#endif
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    /* Print the number of surfaces not freed */
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    if (surfaces_allocated != 0) {
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        fprintf(stderr, "SDL Warning: %d SDL surfaces extant\n",
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                surfaces_allocated);
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    }
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#endif
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#ifdef DEBUG_BUILD
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    printf("[SDL_Quit] : SDL_UninstallParachute()\n");
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    fflush(stdout);
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#endif
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    /* Uninstall any parachute signal handlers */
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    SDL_UninstallParachute();
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#if !SDL_THREADS_DISABLED && SDL_THREAD_PTH
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    pth_kill();
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#endif
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#ifdef DEBUG_BUILD
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    printf("[SDL_Quit] : Returning!\n");
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    fflush(stdout);
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#endif
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}
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/* Get the library version number */
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void
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SDL_GetVersion(SDL_version * ver)
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{
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    SDL_VERSION(ver);
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}
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#if defined(__OS2__)
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/* Building for OS/2 */
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#ifdef __WATCOMC__
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#define INCL_DOSERRORS
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#define INCL_DOSEXCEPTIONS
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#include <os2.h>
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/* Exception handler to prevent the Audio thread hanging, making a zombie process! */
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ULONG _System
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SDL_Main_ExceptionHandler(PEXCEPTIONREPORTRECORD pERepRec,
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                          PEXCEPTIONREGISTRATIONRECORD pERegRec,
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                          PCONTEXTRECORD pCtxRec, PVOID p)
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{
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    if (pERepRec->fHandlerFlags & EH_EXIT_UNWIND)
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        return XCPT_CONTINUE_SEARCH;
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    if (pERepRec->fHandlerFlags & EH_UNWINDING)
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        return XCPT_CONTINUE_SEARCH;
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    if (pERepRec->fHandlerFlags & EH_NESTED_CALL)
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        return XCPT_CONTINUE_SEARCH;
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    /* Do cleanup at every fatal exception! */
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    if (((pERepRec->ExceptionNum & XCPT_SEVERITY_CODE) ==
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         XCPT_FATAL_EXCEPTION) && (pERepRec->ExceptionNum != XCPT_BREAKPOINT)
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        && (pERepRec->ExceptionNum != XCPT_SINGLE_STEP)) {
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        if (SDL_initialized & SDL_INIT_AUDIO) {
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            /* This removes the zombie audio thread in case of emergency. */
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#ifdef DEBUG_BUILD
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            printf
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                ("[SDL_Main_ExceptionHandler] : Calling SDL_CloseAudio()!\n");
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#endif
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            SDL_CloseAudio();
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        }
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    }
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    return (XCPT_CONTINUE_SEARCH);
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}
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EXCEPTIONREGISTRATIONRECORD SDL_Main_xcpthand =
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    { 0, SDL_Main_ExceptionHandler };
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/* The main DLL entry for DLL Initialization and Uninitialization: */
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unsigned _System
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LibMain(unsigned hmod, unsigned termination)
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{
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    if (termination) {
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#ifdef DEBUG_BUILD
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/*    printf("[SDL DLL Unintialization] : Removing exception handler\n"); */
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#endif
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        DosUnsetExceptionHandler(&SDL_Main_xcpthand);
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        return 1;
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    } else {
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#ifdef DEBUG_BUILD
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        /* Make stdout and stderr unbuffered! */
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        setbuf(stdout, NULL);
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        setbuf(stderr, NULL);
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#endif
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        /* Fire up exception handler */
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#ifdef DEBUG_BUILD
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/*    printf("[SDL DLL Initialization] : Setting exception handler\n"); */
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#endif
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        /* Set exception handler */
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        DosSetExceptionHandler(&SDL_Main_xcpthand);
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        return 1;
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   350
    }
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}
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#endif /* __WATCOMC__ */
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#elif defined(__WIN32__)
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#if !defined(HAVE_LIBC) || (defined(__WATCOMC__) && defined(BUILD_DLL))
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/* Need to include DllMain() on Watcom C for some reason.. */
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#define WIN32_LEAN_AND_MEAN
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   359
#include <windows.h>
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BOOL APIENTRY
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_DllMainCRTStartup(HANDLE hModule,
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                   DWORD ul_reason_for_call, LPVOID lpReserved)
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{
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   365
    switch (ul_reason_for_call) {
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    case DLL_PROCESS_ATTACH:
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   367
    case DLL_THREAD_ATTACH:
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   368
    case DLL_THREAD_DETACH:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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   369
    case DLL_PROCESS_DETACH:
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   370
        break;
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diff changeset
   371
    }
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   372
    return TRUE;
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   373
}
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   374
#endif /* building DLL with Watcom C */
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   375
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   376
#endif /* OS/2 elif __WIN32__ */
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   377
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   378
/* vi: set ts=4 sw=4 expandtab: */